As Jackie (Spiceworks) mentioned, it will be published at Official release time (Public notified). Some of us was just privileged to have been given the heads up well in advance :-)

The official announcement was a blog post that went out here. It contained links to the features and the release notes for 7.5. Additionally, the post before this one contains the release notes for 7.5 as a whole. This was a patch to the GA version.